It has been a long time since I've done this quest. Have killed in both areas? There are two sections to this camp. The lower section with the statue. The upper section in the back through the second set of gates.
Unless stated otherwise, all content in this post is My Personal Opinion.
no, it's not bugged; yes i have done it recently. however...
it's been my experience that only Duvardain deeper inside the stronghold (where deeper = from the tent filled with 3 guys and up the hill) drop the tokens. if you farm the Duvardain closer to the entrance, you'll finish the racial slayer deed before you'll see a drop.
I know this is an old thread but the items and mobs are still set up in what might be a confusing way at this location. I thought I'd echo what others have said and add a bit more detail.
As you approach the entrance if instead of entering and fighting mobs you go to the left and uphill you will come to another unguarded gate. Passing through that gate you will find some scattered wargs and a couple of individual hillmen. Just past them is a large tent. The guard outside and the hillmen inside have the "trophies".